Network Appn Ext If Address

1.3.6.1.4.1.52.4.2.2.2.3.5.2.2.2.1.2.1.28

Specifies the physical address of this port depending on the media type. For token ring or ethernet ports, the information is the 6 byte MAC address which starts in byte 1 and ends in byte 6. For token ring ports the MAC address must be specified in non- canonical format. For ethernet ports the MAC address must be specified in canonical format. For frame relay ports, there is no associated address, i.e., it will be a zero length octet string.